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29 juillet 2009

In vogue progressive glasses for attractive female

Generally speaking, people tend to associate sun protection with skin instead of eyes. As a matter of fact, researches show that eyes are sensitive to UV rays which would do harm to eyes and cause eyes diseases. For that reason, we ought to care our eyes especially in hot summer.
Never direct view sun, especially when it is strong. Eyes are very fragile. Short-term direct view to sunlight will result in an immediate shadow in eyes.One may suffer from pain, tears, inflammation and blurred vision if he/she looks up to sun for a long time.
It is well known that eyes are the most sensitive part to the ultraviolet radiation and they can widely absorb UV rays of different wavelengths. The 280-nm wavelength UV ray does the greatest injury to the cornea. It is likely to cause conjunctivitis.The 290-400nm wavelength UV ray can cause biggest damage to the lens, which is also the reason for cataract. Surveys show that if you bask yourself in the sun for one more hour every day, the rate that you get cataract increase 10%.And now we should talk about some precautions.
When you are outgoing in summer, remember to wear broad-brimmed hat or use umbrella, a pair bifical eyeglasses is most effective in protecting your eyes. It is worth notice that only quality progressive glasses are good to your eyes and effective in protection. If you buy schlock sunglasses, instead of protecting eyes, you are doing harm to your eyes. Buy a pair of anti-ultraviolet sunglasses when summer comes so that your eyes will be safer. Medical study has turned out that it is wrong that the darker the better in terms of lenses. Grey is a preferential choice. People with contact lenses may also wear those with anti-UV function which are effective in cutting 90% UV rays. It will be better to wear a pair of progressive eyeglasses.At noon, the sun is strongest and your skin and eyes are at highest risk. The best way to protect you is to keep indoors.

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